27228629 has 4 divisors (see below), whose sum is σ = 27250860. Its totient is φ = 27206400.

The previous prime is 27228623. The next prime is 27228647. The reversal of 27228629 is 92682272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4884100 + 22344529 = 2210^2 + 4727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27228629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27228592 and 27228601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27228623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9164 + ... + 11765.

It is an arithmetic number, because the mean of its divisors is an integer number (6812715).

Almost surely, 2^27228629 is an apocalyptic number.

It is an amenable number.

27228629 is a deficient number, since it is larger than the sum of its proper divisors (22231).

27228629 is a wasteful number, since it uses less digits than its factorization.

27228629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22230.

The product of its digits is 48384, while the sum is 38.

The square root of 27228629 is about 5218.1058824060. The cubic root of 27228629 is about 300.8443951669.

The spelling of 27228629 in words is "twenty-seven million, two hundred twenty-eight thousand, six hundred twenty-nine".